/Engine/Source/Editor/Persona/Public/SocketDragDropOp.h
Use this function to create a new one of me
static [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FSocketDragDropOp](API\Editor\Persona\FSocketDragDropOp) > New ( [FSelectedSocketInfo](API\Editor\UnrealEd\Animation\FSelectedSocketInfo) InSocketInfo, bool bInIsAltDrag )